Color diffusion transfer process employing phosphoramides

Abstract

An improved process for forming a dye image in an image receiving layer of a film unit containing a light-sensitive element and an image receiving element by incorporation therein of a compound represented by the formula ##STR1## WHEREIN R 1 and R 2 individually represent lower alkyl, and n is 3.

What we claim is: 
     
       1. In a process for forming a dye image in an image-receiving layer of a film unit containing a light-sensitive element and an image-receiving element, the light-sensitive element having a silver halide emulsion layer in combination with a diffusible dye image forming substance, an intermediate layer and a protective layer, the image-receiving element containing an image-receiving layer, wherein the light-sensitive element is exposed to light and then subjected to an alkaline processing solution and a silver halide developing agent whereby a diffusible dye is formed in the light-sensitive element, said diffusible dye then being diffusion transfered from the light-sensitive element to the image-receiving layer superposed thereon to form the dye image in the image-receiving layer, the improvement comprising providing at least one member selected from the group consisting of the silver halide emulsion layer, the intermediate layer, the protective layer, the image-receiving layer and the alkaline processing solution with a compound represented by the formula; ##STR12## wherein R 1  and R 2  individually represent lower alkyl, and n is 3. 
     
     
       2. A process according to claim 1, wherein the compound is present in at least one of the silver halide emulsion layer, the intermediate layer, the protective layer, and the image-receiving layer in an amount of 1.0 to 400 ml per 100 g of silver halide. 
     
     
       3. A process according to claim 1, wherein the compound is present in the alkaline processing solution in an amount of 0.1 to 20% by volume. 
     
     
       4. The process according to claim 1 wherein the diffusible dye image-forming substance is selected from the group consisting of a diffusible dye developer capable of developing silver halide to change its diffusibility in the alkaline processing solution; a non-diffusible coupler capable of releasing a chromophore moiety by coupling reaction with an oxidized color developing agent or by intramolecular ring-closing reaction subsequent to the coupling reaction; a non-diffusible redox compound capable of releasing a chromophore moiety by being oxidized to undergo an intramolecular ring-closing reaction; and a non-diffusible compound capable of releasing a chromophore moiety by cleaving in the alkaline solution and capable of reacting with an oxidized developing agent before the releasing to lower the rate of the releasing. 
     
     
       5. A process according to claim 1, wherein the diffusible dye image-forming substance is the dye developer. 
     
     
       6. A process according to claim 1, wherein the diffusible dye image-forming substance is a non-diffusible redox compound capable of releasing a chromophore moiety by being oxidized by an oxidized developing agent to cleave. 
     
     
       7. In a process for forming a dye image in an image-receiving layer of a film unit containing a light-sensitive element and an image receiving element, the light-sensitive element having a silver halide emulsion layer in combination with a diffusible dye image forming substance, an intermediate layer and a protective layer, the image-receiving element containing an image-receiving layer, wherein the light-sensitive element is exposed to light, and then subjected to an alkaline processing solution and a silver halide developing agent whereby a diffusible dye is formed in the light-sensitive element, said diffusible dye then being diffusion transfered from the light-sensitive element to the image-receiving layer superposed thereon to form the dye image in the image-receiving layer, the improvement comprising providing at least one member selected from the group consisting of the silver halide emulsion layer, the intermediate layer, the protective layer, the image-receiving layer and the alkaline processing solution with a compound represented by the formula: ##STR13## 
     
     
       8. A process according to claim 7, wherein the compound is present in at least one of the silver halide emulsion layer, the intermediate layer, the protective layer, and the image-receiving layer in an amount of 1.0 to 400 ml per 100 g of silver halide. 
     
     
       9. A process according to claim 7, wherein the compound is present in the alkaline processing solution in an amount of 0.1 to 20% by volume. 
     
     
       10. The process according to claim 7 wherein the diffusible dye image-forming substance is selected from the group consisting of a diffusible dye developer capable of developing silver halide to change its diffusibility in the alkaline processing solution; a non-diffusible coupler capable of releasing a chromophore moiety by coupling reaction with an oxidized color developing agent or by intramolecular ring-closing reaction subsequent to the coupling reaction; a non-diffusible redox compound capable of releasing a chromophore moiety by being oxidized to cleave in the alkaline processing solution or by being oxidized to undergo an intermolecular ring-closing reaction; and a non-diffusible compound capable of releasing a chromophore moiety by cleaving in the alkaline solution and capable of reacting with an oxidized developing agent before the releasing to lower the rate of the releasing. 
     
     
       11. A process according to claim 7, wherein the diffusible dye image-forming substance is the dye developer. 
     
     
       12. A process according to claim 7, wherein the diffusible dye image-forming substance is a non-diffusible redox compound capable of releasing a chromophore moiety by being oxidized by an oxidized developing agent to cleave.